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- headLevel: is the upstream level of water in the river measured from the top of the crest.
Coefficient set
- pUpValue: : is the distance in metres from the bottom of the river, or crest, to the top of the crest.
- width: is the width if the weir crest in metres.
- sSlope: : is the side slope of the weir. Crump weirs that have side slopes are uncommon, and if present only possible on one crest. The slope is the ratio of the horizontal distance over the vertical distance one metre (1m) expressed as a number.
- dischargeCoefficient: weir discharge coefficient (default is equal to sqrt(g)).
- energyHeadCorrection: if true energy head correction is taken into account (default is true).
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- P = height of weir or height of vertex above bottom
- b = width of weir opening of width of triangle
- h1 = upstream water level
- H1 = upstream energy level
- h2 = downstream energy water level
Q = Cg . Cd . b . H1^(3/2)
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